An optical semiconductor element includes an optical receiver including a first semiconductor layer, a heater for heating the first semiconductor layer; and a monitor. A first semiconductor layer that absorbs light and generates electric carriers; a heater for heating the first semiconductor layer; and a monitor including a second semiconductor layer in which dark current is changed by heat generated by the heater.
Legal claims defining the scope of protection, as filed with the USPTO.
20. The optical semiconductor element according to claim 19, wherein the heater heats the first semiconductor layer to increase light receiving sensitivity on a long wavelength side of a detection range of the optical receiver.
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April 21, 2020
March 28, 2023
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